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Finding the Fourth Proportional to 447,147.81, 617,063.54 and 256,161.96

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Solution

The fourth proportional to 447,147.81, 617,063.54 and 256,161.96 is: 353,503.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,147.81 : 617,063.54 = 256,161.96 : x
  2. Step 2: Convert to fraction form
    447,147.81/617,063.54 = 256,161.96/x
  3. Step 3: Cross multiply
    447,147.81x = 617,063.54 × 256,161.96
  4. Step 4: Simplify right side
    447,147.81x = 158,068,204,570.13
  5. Step 5: Solve for x
    x = 158,068,204,570.13/447,147.81
  6. Step 6: Final answer
    x = 353,503.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.